Coating apparatus



Oct. 31,1939 w, E MaKENZIE A 2,177,666

I COATING APPARATUS Filed Sept. 9, 1937 3 Sheets-Sheet 1 776 H '186' m9180 m AME/W055 1 JMK Oct- 3 1939.. w. LE R. M KENZlE. ET AL COATINGAPPARATUS Filed Sept. 9, 1937 3 Sheets-Sheet 2 Patented Oct. 31,1939

UNITED STATES PATENT- voer-ice Ze -rm Machinery ofl leming- Oorporation,Borough V ton, N. 1., a corporation cl New Jersey Application September9, 1837, Seth! No. 163,082 I his invention relates to coating. apparatusand is herein illustrated as embodied'in a machine for applying a stripeof coating material tothe marginal portions of the bottoms of shoes 5and of the type illustrated in Letters Patent of the United States No.2,100,341, granted November 30, 1937, on an application of W. L. Mac-Kenzie.

The application of a stripe of coating material 10 to the bottoms ofshoes for theattachment of soles thereto presents substantialdifliculties beplication of cement under pressure is carried out bymeans of a rubber nozzle, the outlet end of a which is maintained in'continuous contact with.

the work. It has been found, however, that the character of the surfaceto be'tr'eated is such that nozzles made of rubber and rubbersubstitutes are subject to continual abrasion so that their no life isnot long. Furthermore, it is not practicable to immerse such nozzles ina solvent for the cement, during over-night and week-end periods, inorder to keep the cement from hardening in the nomle passages, withoutcausing deterioration 3g oftthenozzle itself.

, Accor in ly, an important object ofthe inven- I tlon'isto provide, fora coating apparatus, a metal nozzle which will be flexible enough toaccommodate the irregularities of the work and 0 at the same time willdeliver a continuous and A uniform stripe or stripes of coatingmaterial;

' These conditions have been met in the illustrated' construction and inaccordance with a feature of the invention, by providing a plurality uof displaceable delivery members to the workengaging feet of which thecoatihgmaterial is delivered. through individual tubes, the arrangesuch,that dual deiivery'membe go by't-the tubes. v

'lhis' desirable result has beenreachedin accordance withanother featureof the invention is not interfered with providing the feet of thedelivery members pith-mes terminating in outlet openings .1 andyieldable tubes of capillary displacement of the indithe other ends ofwhich are supported in communication with a supply of coating materialunder pressure. As illustrated, thetubes are individually yieldable andtheir delivery ends are slidably engaged in the passages of the feet ofg the delivery members which latter, as illustrated,

have grooves extending forwardly in the feet and in which grooves theoutlets of the passages open. Still another feature of the inventionresides in the provision of a solvent-containing cup 10 positioned forthe convenient reception of the nozzle when disconnected from its normalsupport. Preferably and as illustrated, this cup has a cover providedwith a slot, into which the nonle may be thrust and also provided with18 means for releasably clamping the nozzle to the cover. a

These and other features of the invention will be best understood inconsideration with the following description taken in connection with athe accompanying drawings, in which 1 is a side elevation of themachine, the

supporting column being omitted;

Fig. 2 is an angular view of the solvent cup;

- Fig. 3 is a side elevation, on a much larger scale, of a part of themachine includin the nozzle and the feed roll;

' Fig. 4 is an angular detail view showing a spring-supporting plateused in the nozzle;

Fig. 51s an end view of the part of the mao chine shown mm. 3 and on asimilar scale;

- Fig. 6 is an angular detail view of the tubeholder plate used in thenozzle;

Fig. '7 is an angular view of some of the de'; livery membersof thenozzle, snowing these in 35 separated positions, and I Fig. 8 is anangular view,.in a different diIection, of one of these members.

' A machineof this type, shown in the abovementioned MacKenzie patent,for applying a 0 band of cement around the margin .of the bottomof ashoe for use in the attachment of a sole thereto, comprises a frame I0,a portion of which is made hollow and provided with an integral sideplate I! and a removable plate ll 45 held in spaced relation thereto byshoulderedbolts II. On the frame is mounted a cement receptacle 2|supplied from an invertedcanll and from this receptacle the cement isremoved by means of a pump 24 and forced under presso sure throughaflexible hose 2' and a nozzle 2., whenever a valve II is opened. Thepressure in the hose-is indicated by awe-132- and the valve 3. is underthe control of thefoperator throughjoonnectionsembodyingatreadlerodflanda horizontal turn rod 38 which isconstructed to be readily disconnected from the valve handle at 38 whenit is desired temporarily to remove the nozzle, as will'be laterdescribed. Work, such as a shoe 48 mounted on a last 42 and having anupper overlasted at 44 on the insole 46, may be provided with-a ridgedmetallic shank 48 and is held in inverted position in the hands .of theoperator. As thus held, its margin ispresented progressively to thenozzle 28, being moved for- Such a machine may be-provided with anozzle- I supporting arm 58. In this arm 58 there is clamped a rod 58adjustable in and out with respect to the machine to position the bandof cement and supporting at 'its' outer end a de-' pending carrier 88.The upper end of'this carrier is split and is'gripped in the desiredposition on therod 58 by means of pinch screws 82. This carrier isL-shaped and is forked at its lower end, providing two horizontallyprojecting arms 64 and 88 (Fig. 3) which, have supporting surfaces 88and stop surfaces 88 to receive a nozzle body 18. This nozzle body fltssnugly between the arms 84 and 88 and has lateral flanges'12 which reston the supporting surfaces 88 (Fig. 5) and-when the nozzle is broughtinto assembled relation to the machine, are pressed manually into anoperating position determined by the stop surfaces 8 9. As thus mounted,the nozzle body is held in position by a clamp lever 14 shaped like anin- I verted Y and mounted by'mean's of a pivot pin I8 on the carrier 88with its forked lower ends I8 resting on the upper sides of the flangesI2 of the nozzle body-to grip them in position when urged thereagainstby means of a hand screw 88 threaded in the carrier 88 and bearingagainst the upper end of this lever '|4. a

.' The'application of a continuous and uniform band of cement to thebottom of a lasted shoe involves numerous difliculties, partly becauseof the changing contour of the bottom surface as successive portions ofthe margin are treated and partly becauseof the irregular surface foundand-which results, forexample, from the presence of the shank piece48'or from the wrinkles in the overlasted upper. These conditions weremet successfully in applicant's earlier machine by means of aflexiblenozzle of rubber or the like. Such nozzles maintain contact verywell with the surface to be treated but wear away rather ra'pidly andhave to be replaced. 'Accordingly, the nozzle 28 disclosed herein ismade of metal and is rendered flexible by being made up of a series I.of pivoted plate-like delivery members 8| assuming various forms 82, 84and 88 (Fig. 7) but each, having a passage I24 (Fig. 5) terminating inan outlet or delivery opening 88 within a V-shaped. groove 98 extendingforwardly along the workengaging, surface of the foot 83 of saiddelivery" member. It will'be noted tliat the members 82 and 88 aredesigned to be positioned 'atthe outer sides of the series of membersand, for this reason and in order that the width of the stripe of cementmay be-determined with some exactness,= these membcrshave d p d g edges9 wh ch.

are somewhat longer than the corresponding ner edges 96, 98 so that theyovercome any tendency for the cement to spread laterally. The inner'edges 96,88 are cut away at the comers I88 to permit the cementextruded through these members to spread laterally inward and to mergewith the stripes of cement supplied throughthe members 84 in which thelateral side edges I82 are each provided with notches I84 for a purposesimilar to the purpose of the notches I88. The delivery of a continuousstripe or band of coating material is facilitated by the V-shapedgrooves in the feet of the delivery members. These prevent the work fromclosing the outlets 88 and may be kept full of cementwith only amoderate pressure upon the cement. For most purposes, it is founddesirable to position the sides of the grooves '98 at "an included angleof substantially ninety degrees with oneanother but with some particularcements, however, it may be found desirable to change the included anglebetweenthe sides to sixty degrees.

When assembled, the nozzle delivery members 8'I, of which seven areshown here, are positioned side by side, with the lateral faces at theupper ends of the members in contact with one another and in order tofacilitate assembly and disassembly of the nozzle, the members aremounted on a sleeve II8, thus making it-easier to take them out, as agroup, as for cleaning. It will be'observed from Fig. 7 that the lowerends or feet of the members 84 are of full. width as at the. top butthat -the intermediate portions are thinned or relieved, as at II2 (Fig.8) to reduce, friction and any tendency to stick togetherandtafac'ilitate the introduction of solvent, as will belater described.The outer members and are relieved.only on the inner faces. .Theassembled members are pivotally mounted between two flanges I I4 of thenozzle body and held there by a removable headed pin 8 passing throughthe sleeve 8 and held in position by a cotter pin II 8. It will beobserved from Fig. 3 that the side flanges II4 of the nozzle body arecut away at I28' to reduce the friction between the outer members andthebody and to admit solvent. Downward movement of the members 8| below apredetermined level is prevented by contact of their upper ends 85 withthe body I8.

Delivery of cement to the outletopenings 88 of the pivoted members iseffected through a plurality of resilient, metallic, capillary tubesI22, the lower ends of which are slidably mounted in passages I24 in thefeet 83, said passages terminating at exterior surfaces of the feet. ininlet openings adjacent to grooves I42 in the outlet openings 88. Thelower. ends of the tubes are thereby protected against injury fromcontact with the shoe and at the same time the-free-' dom of movement ofthe members of the nozzle is not reduced as the tubes can slide in thefeet;

of these members and can bend slightly as the members are tilted byupward pressure of the work. These tubes are assembled in a tubebysolder I38 filling, a previously formedv groove I almost 3 I48 in theplate. inasmuch as this groove is intersected by all the tubes- I22, asingle soldering process is all that is necessary to hold the varioustubes in position and there is no danger 5 of getting solder in thetubes. The introduction of the lower ends of the tubes I22 on the holderplate I26 intothe upper ends of the passages I24 opening laterally, i.e., at the under sides, of the 7 feet of the delivery members isfacilitated by the m' provision of the semicircular grooves I42 in theunder faces of thefeet of the members 81 in alinement with the passagesI24. With the feet positioned substantiallyin alinement, it is onlynecessary for a user of the machine to take the tube-holder plate I26and,.raisingit, to press with the thumb the lower ends of the tubes intothe grooves I42. Springs I56 bearing against the delivery members resistthe upward pressure and facilitate the seating of the tubes in these 30grooves. Having pressed the tubes into the open grooves, the wholeseries of tubes may be entered in the passages I 24 of the feet by aslight lateral movement of the tube-holder plate I26.

The feet of the various members of the nozzle 25 are held resiliently incontact with the work, in spite of irregularities therein, by means ofthe above-mentioned 'springs I58, here shown as made of 'wire, the lowerends of which are curved upwardly and rest. in V grooves I52 (Fig. 8)-30 formed in the upper edges of the members. .is with the tubes, thesesprings I58 are assembled in parallel positions. in a springcarrierplate I54 having a series of parallel grooves I55 in its lower face anda series of apertures leading up- 5 wardly into a groove I58. The upperends of the springs are turned upwardly at substantially right anglesand, passing through the apertures in this groove I58, are held inposition therein by solder I60 filling the groove. It is easy, there- 4ofore, to position the spring carrier-plate I54 with the lower ends ofthe springs resting in the grooves of the nozzle members and then toattach it to the nozzle body Ill by means of screws I52 (Fig. 5).

45 Any tendency of the pivoted members of th nozzle to be stuck togetherby the cement is avoided by supplying small quantities of solvent,suited to the cement employed, to the upper side of the assembled nozzlethrough a tube I64 supported on a bracket I66 which is attached to theside plate I2 of the frame, solvent being supplied through this tube,drop by drop, from a receptacle I88 similar in construction to thecommon sight-feed lubricating cup employed in many machines. The 5 cupmay be opened or closed by means of a finger "piece I10 and the deliveryof fluid regulated by a thumb nut I12.

When the machine is not to be in use for a substantial period, overnight, for example, it is 30 found convenient to'immerse the nozzle inninth of solvent and, to simplify and hence encourage this step, thereis provided a solvent cup I14 (Figs. 1 and 2) having a bracket I16enabling it to be detachably secured to the frame of the machine bymeans'of a bolt I18 and a coacting wing nut I80. Solvent .is kept at thedesired level in this cup I14 by means of .an inverted bottie I12serving as a barometric fee'dtherefor. A cover I84 is mounted on the cupby means of a, 7 pivot pin I86 and held fllmly closed against it byawing nut I88. This cover hasa slot I88 just wideenough to receive thenozzle body I8, with the flanges 12 of the body resting on the adiacenttop; surfaces of the cover. The cover is provided 7 with an upright I92to which is pivoted a clamp I84 substantially like the clamp 14 on themachine and this may be used to grip the nozzle body to the cover whenpressed into contact with the flanges 12 by a thumb screw I96. When thenozzle is not in the solvent cup, the opening provided by the slot I66is closed by means of a pivoted flap I58. It will thus be seen that a-convenient arrangement has been provided in such a positionwith respectto the attaching point of the flexible'hose 26 that the nozzle may,

by loosening the screw 80 of the clamp 14, quickly be separated from itscarrier 66 and, after separating the valve rod 86 but without detachingthe gage or the valve casing I26, may be swung into position in thesolvent cup. The cover I84 will be I tilted up about its pivot pin I86to admit the nozzle delivery members to the cup, as the nozzle body isslipped into the slot I50, and will then be ,retu andffastened by thewing nut I88. The nozzle is then secured in the slot of the cover go I84of the solvent cup by the clamp I94 and, hence, there is no danger ofdamage to the feet of the delivery members of the nozzle by reason ofcontact with the bottom of the cup and the correct position of thenozzle with respect to the .cup is assured.

In the operation of the machine, a piece 0 work is presented in invertedposition, as indicated in Fig. ,3, whereupon the operator depresses atreadle connected to the treadle rod 34, thus opening the valve 30, andcement is delivered by the pump 24 to the nozzle. At the same time, thefeed-wheel carrier 52 is moved outwardly to bringthe feed wheel 50 intocontact with the side of the shoe and a progressive treatment of ,themarginof the'bottom of the shoe'is thus facilitated, it being understoodthat the operator supports the shoe at various angles necessary for thepresentation of the uneven surface of the shoe to the nozzle, a uniformdelivery of cement Q through the'spring-pressed delivery members of thenozzle being effected as the shoe is moved along to present the bottommargin progressively to the nozzle. During this traversing movement ofthe work, the nozzle will accommodate itself a to the varying surfacesof the shoe bottom by reason of the pivotal mounting of the deliverymembers. .At the same time, each individual delivery member is narrowenough so that its lateral edges remain substantially in firm contactwith a portion of the bottom to which it is delivering cement. Thisenables a continuous and uniform stream of cement to be deliveredthrough each member and these streams or threads usually merge to form astripe of substantial width. u

Having described our invention, what we claim as new and desireto'secure by Letters Patent 0 the United States i8:

1. In a coating apparatus, a device for applying a stripe of coatingmaterial to a piece of 80 workand comprising a displaceabiy mountedrigid delivery member having a foot provided with a passage terminatingat outside surfaces thereof inan inlet opening and an outlet opening,and .means for supplying coating material under pressure tosaid passageand comprising a flexible tube rigidly supported at its supply end and,directy inserted at its other end in the inlet opening ofsaid foot.

2. In a coating apparatus, a supportfa series ofseparate deliverymembers movably mounted upon the support independently of one anotherand adapted to rest in contact with the work, and

' a series of flexible-tubes secured in the support I moved from theirpivotal 'vided with forwardly extending grooves in their ply, said tubesbeing individually connected to the delivery members.

3. In a coating apparatus, a device for applying a stripe of coatingmaterial to a piece of work v and comprising a plurality ofspring-pressed deof tubes fixed at one end, the other ends of said tubesbeing 'slidable in said passages thereby per-" mitting displacement ofsaid feet without interrupting the supply of coating material.

'5. In a coating apparatus, a device for. applying a stripe of coatingmaterial to a piece of work and comprising a plurality of displaceableplate; like delivery members having work-engaging feet, said membershaving passages extending through a portion of the length thereof andterminating in outlet openings in said feet, and means for supplyingcoating material, under pressure to said delivery members and comprisinga plurality of tubes rigidly secured at their inlet ends and enteringthe passages in said feet at their outlet ends.

' 6. In a coating apparatus, a device for a'pply-. ing a stripe ofcoating material to a piece of work and comprising a plurality ofpivotally mounted delivery members the free, ends of which are -pro-'vided with work-engaging feet having passages terminating in outletopenings, resilient means for holding saitl feet in contact with thework, and means for supplying coating material under pressure to saidfeet and comprising a plurality of tubes terminating in said passages.

7. In a coating apparatus, a device for. applying a stripe of coatingmaterial to apiece of work and comprising a plurality of pivotallymounted delivery members having work-enging feet prowork-contacting Isurfaces, said feet havingpas: sages originating laterally thereof andterminatingin said grooves, and means for.supplying coatingmaterialunder pressure and comprising tubes severally. connected to saidpassages, said tubes being feet.

yieldable to permit movement of the -8. In a coating apparatus, meansfor applying a stripe of coating material to a piece of work tandcomprising pivotally mounted work-contact- I ing members havingapertured feet, resilient means for holding said ,apertured feet incontact with the work, and means-for-slipn coating material underpressure to-the individual feet and comprising tubes connected with saidfeet adjacent to'their outlet ends and at points remounting. h 9. In acoating apparatus, a striping tool comprising a plurality of memberspivotally mounted side by side in a group substantially in contactingrelation and having apertured feet to rest on' a piece of work,resilient means for holding said work-contacting feetagainst the work,and means for supplying coating material under pressure to the aperturesin said feet and comprising individual resilient tubes rigidly supportedat a point spaced from the pivot of said members and Joined severally tosaid membersat points .adjacentto the outlet openings thereof.

10. In a coating apparatus, a plurality of individualcoating-materiaI-applying members having each an outlet opening djacentto its point of contact with the work, said members being individuallydisplaceable and spring pressed thereby to accommodate irregularities inthe surface contour of the work, and means for supplying coatingmaterial to the outlets of said displaceably mounted members andcomprising individual tubes leadingfrom a flxed chamber to points onsaid members closely adjacent to the applying ends thereof.

, 11. In a coating apparatus, a device for applying a stripe of coatingmaterial to a piece of work andlcomprlsing a plurality of displaceabledelivery members positioned side by side, and individual springs forsaid members secured at one 12. In a coating apparatus, a device forapplying a stripe of coating material to a piece of receive and positionsaid springs, and means for holding said springs on said plate.

13. In a coating apparatus, a device for applying a stripe of coatingmaterial to a piece of work and comprising a plurality of displaceabledelivery members, a plurality of springs ,associated therewith, and aspring plate having apertures receiving said springs and ,opening into asolderfilled groove.

14. In a coating apparatus, a device for applying a stripe of coatingmaterial to a piec'eof work and comprising a plurality of nozzle tubes,a plate having. a recess in which said tubes open at their inlet ends,passages in said plate for the tubes, a transverse groove intersectingthe passages between the recess and the outlet ends of the tubes, and}solder in the latter groove securing the tubes.

15. In a coating apparatus, a device for applying a stripe of coatingmaterial to a piece of work and comprising a plurality of displaceabledeliv- ',ery members, substantially parallel springs associated withsaid members, a spring plate having 1 spring-receiving positioninggrooves, a groove transverse tosaidpositioning grooves, and aperturesopening into said transverse groove. 16. In a coating apparatus,a-device for applying a stripe of coating material to a piece of workand comprising a plurality of nozzle tubes, a supporting plate therefor,a groove in the plate extending transversely of the tubes with bothsides of the groove spaced from ends of the tubes. es for the tubesintersecting the groove, and solder inthegroove to secure the tubes.

17. In a coating apparatus, a device for applying a stripe of: coatingmaterial to a piece of work and comprising a displaceable delivery.member having a work-contacting 'foot provided with a passageterminating in an outlet in said foot, the,

other end of said passage opening laterally of said delivery member, andprovided 'with an. open groove having a surface in alinement with saidpassage to facilitate the insertion of a supply 1 tube therein. I

18; In a coating apparatus, a'device for applying a stripe of coatingmaterial to a piece of work and comprising a plurality of pivoteddelivery -members, springs tending to holdsaid delivery members inalinement againstwa stop. passages through theends of said deliverymembers opening laterally thereof, said members having open grooves inalinement with the passages, supply .tubes for the delivery memberssupported in alinement with one another, and means for supplying coatingmaterial through said tubes.

19. In a coating apparatus, a device for applying a stripe of coatingmaterial to a piece of work and comprising a nozzle body, a plurality ofdelivery members displaceably mounted on said body, a bushing extendingtransversely of said delivery members to hold them in a group, and a pinpassing through said body and said bushing to mount themembers on thebody.

ing a stripe of coating material to a piece of work and comprising anozzle body, a plurality of delivery members displaceably mounted onsaid body, a bushing extending transversely of said 20 delivery membersto hold them in a group, a pin passing through said body and saidbushing to maintain the members on the body, resilient means urging saiddelivery members in one direction, and individual supply tubes for saidmembers.

21. In a coating apparatus, a device for applying a stripeot coatingmaterial to a piece of work and comprising a plurality of-displaceabledelivery members mounted side by side in substantially contactingrelation, said delivery members having grooved, work-contacting feet,means to supply coating material to said grooves, said grooved feetbeing cut away at the leaving ends at :hose corners which are adjacentto another o '22. In a coating apparatus, a device for applying a stripeof'coating material to a piece of work and comprising a plurality ofdispla'ceable means to supply coating material to said grooves,

I said grooved feet being. cut awayat the leaving end at those cornerswhich areadiacent to another foot, the outside members of the groupedges.

24. Inacoatingapparatus. aframemember,a

'noaslememberhavingaportionrestingagainst 20. In a coating apparatus, adevice for apply-- having their outer edges longer than the inner.

said frame member, -.a clamping lever fulcrumed on one of -said membersand engaging the other member, and means arranged to swing said lever-25. In a coating apparatus. a device for applying a stripe of coatingmaterial to a piece of work and comprising a nomle support provided withadjacent angularly related surfaces, a nozzle body adapted to bepositioned .by engagement with said surfaces, and a pivoted,screw-operated clamp for holding said nozzle body against one surface.

26. In a coating apparatus, a device for applying a stripe of coatingmaterial to a piece of work and comprising a nozzle body, a nozzlesupport having forked ends which are spaced to receive and position aportion of the nomle body, said body having laterally extending flangessupported on said forked ends, and a forked clamp for pressing saidflanges against said forked supp 27. In a coating apparatus, a devicefor applying a stripe of coating. material to apiece of work andcomprising a nozzle, means for applying coating material to said nozzleand comprising a flexible hose securedat one end to the machine and atthe other end to the nozzle, means for supporting said nozzle inanoperative position, a solvent cup secured to the machine andpositioned to receive the nozzle when in inoperative position andwithout detachment of the hose connected thereto, and means forsecuring'said nozzleinsaid cup,

28. In a coating apparatus, a device for applying a stripe of coatingmaterial to a piece of work and comprising a nozzle, means for supplyingcoating material under pressure to said nozzle including a flexible hoseand a'shut-ofl valve, an Op rator-controlled device for said valveseparably connected thereto, a releasable clamp holding said nozzle inoperative position, and a solvent cup on the machine within the reach ofand comprising a detachably supported nozzle, a

solvent cup, a cover for said cup having a nozzlereceiving slot, a clampfor holding the nozzle in normal position upon the machine, and anotherclamp on the slotted cover of the cup.-

WHBUR LE ROY- MACKENZIE. m S. NOKES.

